KR20030080581A - A non-woven fabric, product method and product apparatus of it - Google Patents

Abstract

PURPOSE: Provided is a multi-layered non-woven fabric with an intermediate wool fiber which involves excellent heat insulation, smoothness, flexibility and durability. CONSTITUTION: The multi-layered non-woven fabric comprises a wool intermediate(4), and the first and second outer skin fibers(2,3) attached to the top and the bottom of the wool intermediate. The wool intermediate is formed with all of wool, or it is formed by mixing the wool with polyester in a weight percent ratio of 20-80:80-20. The outer skin fibers are formed with polyester.

Description

Multilayered nonwoven fabric with interlayered wool fiber, manufacturing method and apparatus therefor {A non-woven fabric, product method and product apparatus of it}

The present invention relates to a multi-layered nonwoven fabric made of wool fibers with an intermediate layer formed by forming an intermediate layer using wool, and laminated with chemical fibers (FIBER) on the front and back surfaces thereof, and a method and a manufacturing apparatus thereof.

In more detail, the conventional card (CARD) and the molding machine is provided with a plurality of fiber supply unit of a pair to supply the first jacket (base plate) made of chemical fiber (FIBER) by the preceding fiber supply unit The upper part of the first outer jacket is supplied with the intermediate fiber supply unit and is made of wool (WOOL) or the intermediate fiber containing the wool is laminated, and the upper surface of the intermediate fiber on the rear fiber supply unit By supplying and laminating the second outer shell (upper surface), by compressing the laminated nonwoven fabric by heating pressing to thin the thickness and then to coat the strength reinforcing binder on the upper and lower surfaces to dry.

Artificial cotton, such as non-woven fabrics that are used as insulation for various kinds of clothes (sports clothes) such as ski clothes, mountaineering clothes, and general sportswear, usually use composite fibers and nylon composite fibers as well as polyester single fibers, which are synthetic fibers. Carding was carried out when the preparation was carried out to form the form of cotton and sprayed with a conventional acrylic resin, etc. for their chemical bonding was prepared by dry bonding.

Non-woven artificial cotton manufactured by such a general manufacturing method is expensive, easy to handle, and easy to handle, lightweight, and has excellent activity, fashion, and three-dimensional (volume) feelings, as well as a comfortable fit. It is widely used as a thermal insulation material for various clothes.

In particular, the artificial cotton used for coating is required to maintain excellent body temperature, and heat conduction by conduction, radiation, and convection is greatly affected by the thermal conduction of the fiber itself.

However, polyester fiber, which is widely used in the past, is a single fiber made by spinning two different materials with different heat shrinkage and swelling properties. do. Due to this phenomenon, when the artificial cotton is manufactured, it can maintain a large touch and a certain thermal insulation, but it has a limit in maintaining excellent thermal insulation due to the high thermal conductivity (0.00052 cal / cm.s. ℃) of the polyester fiber itself. .

In addition, a laminated nonwoven fabric such as the laminated nonwoven fabric according to the present invention has already been proposed in the past.

As a conventional laminated nonwoven fabric, Korean Patent Publication No. 1995-4162 "Laminated nonwoven fabric and its manufacturing method", Patent Publication No. 1995-9487 "Method of manufacturing a nonwoven web", Patent Publication No. 1996-1406 "Bulker property Nonwoven fabric "and the like.

Since these conventional laminated nonwoven fabrics are manufactured using the same chemical fibers (primarily polyester), there was some economical efficiency, but there was a problem that not only the warmth and breathability were significantly lowered, but also the touch was not soft. If there is a problem that the exudation phenomenon that the silol (polyester) is easily escaped out of the outer skin due to the electrostatic phenomenon.

Proposed to solve this problem somewhat, domestic patent registration No. 245583 "a method for producing a nonwoven fabric using natural fibers is known. This is a low melting fiber (polyester) of polyester in natural fiber yarn having a predetermined length ) Is added and mixed evenly so as not to have a directionality to form a mixed yarn (??), and the mixed yarn is molded to a predetermined standard by a conventional carding apparatus, and then molded by applying pressure while applying hot air, and the molded mixture It is cut to a predetermined standard so that the yarn can be used as a mattress.

However, the nonwoven fabric produced by the above method is formed by mixing polyester, which is a low melting point fiber, with natural fiber yarn, but the inner space maintains a lot of circulation space with the outside, and the inside (surface and back) has internal air and Since there is no function to block external air, there is a problem that not only the heat retention is significantly lowered but also the outer surface is easily worn and damaged.

The present invention is to further improve to solve the above problems to provide a multi-layer nonwoven fabric of the interlayer wool fiber, and a manufacturing method and a manufacturing apparatus thereof.

The present invention is a non-woven fabric manufactured by using a conventional polyester or natural fiber wool (WOOL), in order to effectively block the conduction of heat and at the same time to obtain the surface smoothness of the outer fibers of the surface (top) and back (bottom) poly It is made of polyester composite fiber, middle fiber of which is formed by blending polyester fiber with polyester fiber in order to be made of wool fiber (WOOL) having the lowest thermal conductivity in the middle of these jacket fibers or to maintain excellent durability after washing. The purpose of the present invention is to provide a multi-layered nonwoven fabric capable of maximizing content by providing a low thermal conductivity.

The present invention is to produce a laminated non-woven fabric using a conventional polyester or natural fiber (WOOL), the conventional carding machine (Carding) and the prior art fiber supply apparatus having a plurality of feeder unit which is a molding machine The part supplies the first outer shell (bottom plate) made of chemical fiber (FIBER), and the upper middle part of the supplied first outer shell is made of wool (WOOL) by the intermediate fiber supply unit or the intermediate fiber containing wool The upper surface of the intermediate fiber is laminated by supplying the second outer shell (upper surface) by the fiber supply unit on the rear side, and the laminated nonwoven fabric is heated and pressed to reduce the thickness, and then the upper and lower surfaces. An object of the present invention is to provide a method and apparatus for manufacturing a multilayer nonwoven fabric which is coated with a binder for strength reinforcement and dried.

Another object of the present invention is to laminate the fibers of the polyester on the surface (plane and bottom) of the natural wool fibers of the middle wool fibers made of natural fibers to keep the touch soft while maintaining a soft touch, The present invention provides a multi-layered nonwoven fabric, a method of manufacturing the same, and an apparatus for manufacturing the same.

Still another object of the present invention is to apply a binder to the outer surface of the polyester fiber laminated on the surface (plane and bottom) of the middle wool fiber, the multi-layered nonwoven fabric to enhance the sealing function and also to strengthen the binding force It is to provide a manufacturing method and a manufacturing apparatus.

Still another object of the present invention is to separate the conveyor of the drying unit by forming a binder on the outer surface of the laminated nonwoven fabric, and forming a conveyor for drying the binder and drying the conveyor for drying. It is to provide a multi-layer nonwoven fabric manufacturing apparatus that can prevent the nonwoven fabric from being contaminated to improve the quality.

The above and other objects of the present invention, in the non-woven fabric manufactured by using a conventional polyester or natural fiber wool (WOOL), the upper surface and the bottom surface of the middle wool fiber (4) only made of wool (WOOL) or containing wool It is achieved by the multilayered nonwoven fabric (1) (1-1) characterized in that the first coat fiber (2) and the second coat fiber (2) made of ordinary polyester are integrally formed by adhesive bonding.

Another and other object of the present invention, in the manufacture of laminated nonwoven fabric using a conventional polyester or natural fiber (WOOL), the carding machine (carding) and the fiber feeder unit forming a set of multiple The first jacketed fiber supply unit 11 is provided by the step of supplying the first jacketed fiber (2) made of chemical fibers (FIBER), and the intermediate fiber on the upper surface of the first jacketed fiber (2) to be supplied Supplying and stacking the middle wool fibers 4 by the supply unit 12, and the second outer fiber fibers 3 by the second outer fiber supply unit 13 on the upper surface of the middle wool fibers 4; And a process of needle punching the laminated nonwoven fabric by the needle punching device unit 14, a process of compressing the heated non-woven fabric through the heating pressing unit 15, and a thinner nonwoven fabric. Strength of the upper and lower surfaces by the first spray 18 and the second spray 19 It is achieved by a method and apparatus for producing a multilayer nonwoven fabric made of a stationary coating covering a steel binder and drying by hot air.

Figures 1a and 1b is a cross-sectional view showing a multi-layer nonwoven fabric according to the present invention.

Figure 2 is a schematic view of the multi-layer nonwoven fabric manufacturing process according to the present invention.

Figure 3 is a schematic view of the multi-layer nonwoven fabric manufacturing process according to the present invention from the front.

Explanation of symbols on the main parts of the drawings

1. Multi-woven nonwoven fabric 2. First jacket fiber

3. Second jacket fiber 4. Middle wool fiber

10. Multi-layer nonwoven fabric manufacturing apparatus 11. First outer fiber supply apparatus

12. Middle wool fiber supply unit 13. Second outer skin supply unit

14. Needle Punch Unit 15. Heating Press Unit

16. Drying Unit 17. Winding Unit

18. First sprayer 19. Second sprayer

20. Hot air duct 26. Supply conveyor

27. Discharge Conveyor

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

Figures 1a to 3 is an exemplary view showing a multi-layer nonwoven fabric and a manufacturing process according to the present invention, Figures 1a and 1b is a side view showing a multi-layer nonwoven fabric (1) (1-1), Figure 2 and 3 is a plan view and a front view showing a manufacturing process.

Multilayered nonwoven fabric (1) (1-1) according to the present invention is constructed as illustrated in Figs. 1A and 1B. The multi-layered nonwoven fabric 1 illustrated in FIG. 1A is a blend fiber in which only the wool fiber (WOOL) or the wool fiber (WOOL) and the polyester fiber are mixed on the upper surface of the first envelope fiber 2 made of a conventional polyester composite fiber. The middle wool fibers 4 are integrally laminated, and the second jacket fiber 2 made of ordinary polyester composite fibers is integrally laminated on the upper surface of the middle wool fibers 4.

The multi-layered nonwoven fabric 1-1 illustrated in FIG. 1B is made of only wool fibers (WOOL) or mixed with wool fibers (WOOL) and polyester fibers on the upper surface of the first enveloped fiber 2 made of a conventional polyester composite fiber. The middle wool fibers (4) made of blended fibers are laminated integrally, but the middle wool fibers (4) are sequentially laminated with the first middle wool fibers (5) and the second middle wool fibers (6) having different materials and properties. The second jacket fibers 2 made of ordinary polyester composite fibers are laminated integrally on the upper surface of the middle wool fibers 4.

In addition, although not shown in detail, in the formation of the middle wool fiber 4, materials and characteristics such as the third middle fiber and the fourth middle wool fiber, in addition to the first middle wool fiber 5 and the second middle wool fiber 6 It can be formed by stacking different kinds of mesowool fibers.

The multilayer nonwoven fabric (1) (1-1) configured as described above is molded and manufactured using the multilayer nonwoven fabric forming apparatus 10 as illustrated in FIGS. 2 and 3.

Multi-layer nonwoven fabric manufacturing apparatus 10 according to the present invention is the first outer fiber supply unit 11 for supplying the first outer fiber (2), the middle wool fiber supply unit for supplying the middle wool fiber (4) (12), a second jacketed fiber supply unit (13) for supplying the second jacketed fiber (3), the first jacketed fiber (2) and the intermediate wool fiber (4) and the second jacketed fiber (3) laminated Of the conventional needle punching device portion 14 for thinning the thickness of the nonwoven fabric, the heating pressing device portion 15 for pressing the outer surface (upper and lower surface) of the laminated nonwoven fabric with heat, and Dryer unit 16 and fully molded multi-layer nonwoven fabric 1 for applying resin to the outer surfaces of the first outer fiber 2 and the second outer fiber 3 and drying them by hot air to form them completely. It consists of a winding apparatus 17 which winds 1) in a normal roll.

The first envelope fiber supplying device 11 is provided with a first carding machine 21 and a first molding machine 21-1 by using a conventional carding machine and a molding machine to supply the first envelope fiber 2. .

The middle wool fiber supply unit 12 includes a conventional carding machine and a molding machine, and a second carding machine 22, a second carding machine 22-1, a third carding machine 23, and a third molding machine 23-1. In order to supply the middle wool fiber 4, but to supply only one layer of the middle wool fiber 4, the second carding machine 22, the second carding machine 22-1 and the third carding machine ( 23) and only one set of the third molding machine 23-1, and the middle wool fibers (4) to be supplied in two layers, such as the first wool fibers (5) and the second wool fibers (6) In this case, both sets can be used, and although not specifically illustrated, a set consisting of a conventional carding machine and a molding machine can be used to stack the middle wool fibers 4 in multiple layers as necessary. Can be installed and used.

The second jacketed fiber supply device 13, which is installed at the rear side of the middle wool fiber supply device 12, is also used as the fourth carding machine 24 and the fourth molding machine 24-1 by using a conventional carding machine and a molding machine. Formed.

The first jacket fiber 2 and the intermediate wool fiber, which are stacked and supplied by installing a general needle punching device 14 in the rear of the fourth molding machine 24-1 in the second jacket fiber supply device 13, 4) and the yarns of the second jacket 3 are entangled with each other by a needle operated up and down to reduce the volume while integrally forming.

An integrated feed conveyor 26 is provided below the first outer fiber supply unit 11, the intermediate wool fiber supply unit 12, and the second outer fiber supply unit 13 and the needle punching unit 14. The first jacketed fiber 2 and the middle wool fiber 4 and the second jacketed fiber 3 to be laminated and supplied to be transported.

The heating pressing device unit 15 installed on the rear side of the needle punching device unit 14 is provided with a vertical heating roller 15-1 and 15-2, which are steel and have an electrothermal heating device built therein. The distance between each other is maintained at 0.5 ~ 2.0mm and the temperature is maintained at 140 ~ 180 ?? so that they can be thermally compressed.

On the rear side of the heating roller device part 15, a drying device part 16 was provided. The drying device unit 16 sprays an appropriate amount of liquid acrylic resin onto the outer surfaces of the first outer fiber 2 and the second outer fiber 3 to be transported by a conveyor in the housing 16-1. It is characterized by having multiple layers of hot air ducts for drying the apparatus and the spray-coated resin immediately.

In the housing 16-1, the second conveyor 22, the fourth conveyor 24, and the fifth conveyor 25 are installed in a plurality of layers on the lower side, the middle side, and the upper side, but the second conveyor 22 and the fourth conveyor are installed. The first conveyor 21 and the third conveyor 23, each of which has a short length, are provided on each input side of 24, and a first spray device 18 is provided on the upper side of the first conveyor 21, and a third conveyor is provided. On the upper side of (23), acrylic resin was sprayed and applied to the surfaces of the second outer fiber (3: upper outer skin) and the first outer fiber (2) of the multi-layer nonwoven fabric (1) (1-1). The first hot air duct 20-1, the second hot air duct 20-2, and the third hot air duct are disposed on the upper and lower sides of the second conveyor 22 and the fourth conveyor 24, and the lower side of the fifth conveyor 25. 20-3), the fourth hot air duct 20-4 and the fifth hot air duct 20-5 were respectively installed to dry the acrylic resin.

On the discharge side of the fifth conveyor 25, an outer side of the housing 16-1 is provided with a discharge conveyor 27 composed of a first discharge conveyor 27-1 and a second discharge conveyor 27-2. The multi-layered nonwoven fabric (1) (1-1) to be transported to a predetermined position, the lower side of the discharge conveyor 27 by installing a conventional winding device 17 is discharged multi-layered nonwoven fabric (1) ( 1-1) can be wound around.

Hereinafter, the operation relationship of the multi-layer nonwoven fabric manufacturing apparatus 10 configured as described above will be described. The first jacketed fiber 2 and the second jacketed fiber 3 supplied through the first jacketed fiber processing unit 11 and the second jacketed fiber supply unit 12 to be used as the surface layer have a thickness of short fibers. Pure polyester composite fibers with 2.0 to 3.0 denier and 40 to 60 mm fiber length can effectively prevent heat transfer and at the same time obtain excellent cotton smoothness. The fibers 3 were such that 20 to 30% of the total weight of the multilayered nonwoven fabric (1) (1-1) was maintained.

On the other hand, the middle wool fiber (4) supplied through the middle wool fiber supply unit 12 is excellent in washing even with the wool (WOOL, thermal conductivity: 0.000092 cal / cm.s. ℃) having the lowest thermal conductivity among the fibers Maintain durability and mix (blend) ordinary polyester (1.5 ~ 3.0 denier), but keep the ratio of wool and polyester at 20 ~ 80%: 80 ~ 20% ratio to maximize the effect of warmth and durability If the wool content is maintained at 20%, the warmth is inferior, whereas if it is maintained at 80% or more, durability after washing cannot be maintained, that is, it is possible to mobilize the end where the product is deformed. .

In particular, the middle wool fibers (4) is preferably to maintain a ratio of 40 to 60% of the total weight of the multi-layer nonwoven fabric (1) (1-1), the weight ratio of the middle wool fibers (4) is multi-layer nonwoven fabric (1) If it is less than 40% of the total weight of (1-1), the content of wool is too small to maintain good heat retention, and if it is maintained at 60% or more, the content of wool This too much can not be kept in a circular state after washing, not only the durability is degraded, but also the fit is reduced.

In the state where the supply conveyor 26 is operating at the predetermined speed which is set slowly, the 1st jacket fiber supply apparatus part 11 which consists of the normal 1st carding machine 21 and the 1st molding machine 21-1 is carried out. When the first jacketed fiber 2 is supplied through it, as shown in FIG. 3, the first jacketed fiber 2 is moved by the supply conveyor 26 which is operated and moved by the supply conveyor 26. On the first envelope fiber (2) to be transported while being deployed, the middle wool fiber (4) supplied through the middle wool fiber supply unit (12) is stacked while being developed. When the middle wool fiber 4 is to be formed in a single layer as shown in FIG. 1A, the second carding machine 22 and the second molding machine 22-1 installed in the middle wool fiber supply unit 12 are provided. A middle layer fiber (4) of a single layer is supplied by using either one of a set portion composed of a set portion composed of a) or a set portion composed of a third carding machine (23) and a third molding machine (23-1), and As shown in FIG. 1B, the second carding machine 22 and the second molding machine 22-1 are used to stack the first and second wool fibers 5 and 6, respectively. The first wool fiber 5 is first supplied through the set part and laminated, and the second wool fiber 6 is supplied and laminated through the set consisting of the third carding machine 23 and the third molding machine 23-1. Give it.

As described above, when the middle wool fiber 4 having a single layer is stacked or the first wool fiber 5 and the second wool fiber 6 are stacked and transported, the fourth carding machine 24 and the fourth molding machine ( The second jacket on the middle wool fiber (4) to be supplied by the supply conveyor 26 to supply the second jacket fiber (3) through the second jacket fiber supply unit 13 consisting of 24-1) The fibers 3 are laminated.

The laminated fiber in which the first outer fiber 2, the middle wool fiber 4, and the second outer fiber 3 are laminated in this way is kept integrally as the threads are entangled with each other while passing through the conventional needle punching device 14. And part of the thickness is kept thin.

The laminated fiber, which is integrally passed through the needle puncher unit 14 and is partially thinned, is maintained at a temperature of 140 to 180 ° and is heated by power of another power unit (not specifically shown). While passing between the heating rollers 15-1 and 15-2 of the apparatus section 15, they are compressed and heat-sealed.

Pressed and heat-sealed laminated fibers passing between the heating rollers 15-1 and 15-2 of the heating pressing device unit 15 are supplied into the housing 16-1 of the drying device unit 16 ( Inflow).

When the laminated fibers introduced into the housing 16-1 are transported by the separate first conveyor 21, the first spraying device 18 injects the water-soluble acrylic resin to the second jacket fiber 3 Apply to the surface of the.

The laminated fiber coated with the water-soluble acrylic resin on the surface of the second envelope fiber 3 while passing through the first spray device 18 is conveyed by the second conveyor 22. At this time, the hot air duct 20-1 ) And the water-soluble acrylic resin applied to the surface of the second envelope fiber 3 by hot air sprayed through the second hot air duct 20-2 is immediately dried.

The laminated fiber dried by hot air sprayed through the hot air duct 20-1 and the second hot air duct 20-2 by the water-soluble acrylic resin coated on the surface of the second jacket fiber 3 is a preroller 28. After passing through -1), it is fed upward and fed to the third conveyor 23. When the direction is changed upward, the second jacket fiber 3 located on the upper side where the acrylic resin is applied and dried is lowered. It moves to, and the lower 1st outer fiber 2 is conveyed, maintaining the state switched to the upper side.

As described above, when the laminated fibers in which the direction is changed are transferred by the third conveyor 23, the water-soluble acrylic resin, which has already been described in the first spray apparatus 18, is changed through the second spray apparatus 19. Sprayed and applied to the surface of the first jacketed fiber (2) to be transferred.

As described above, the water-soluble acrylic resin sprayed by the first spray device 18 and the second spray device 19 is preferably coated with 3 to 30 g per M ² . If the binding force is weakened, the occurrence of the moor on the surface, on the other hand, if applied more than 30g, the flexibility (softness) is reduced.

The third hot air duct 20-3 when the laminated fiber coated on the surface of the first envelope fiber 2 in which the water-soluble acrylic resin is turned by the second spray device 19 is transferred by the fourth conveyor 24. ) And the water-soluble acrylic resin applied to the surface of the first jacket fiber 2 is immediately dried by the hot air sprayed through the fourth hot wind duct 20-4.

The laminated fiber in which the water-soluble acrylic resin applied to the surface of the first envelope fiber 2 is dried is made of a multilayer nonwoven fabric 1, 1-1 as illustrated in FIG. 1A or FIG. 1B, and a multilayer nonwoven fabric 1 (1-1) is turned upward while passing through the pre-roller (28-1) and then conveyed by the fifth conveyor 25 is discharged to the outside of the housing (16-1), the multi-layer nonwoven fabric (1) (1-1) is applied to the first jacketed fiber (2) and the second jacketed fiber (3) by the hot air discharged from the fifth hot wind duct (20-5) when transported by the fifth conveyor (25) The acrylic resin is dried again.

The multi-layered nonwoven fabric (1) (1-1) in which the acrylic resin is completely dried is transferred to a predetermined place by the discharge conveyor (27) composed of the first discharge conveyor (27-1) and the second discharge conveyor (27-2). After it is wound, it is wound around a winding device 17 using a normal roll.

The nonwoven fabric and polyester composite fiber of the multi-layer nonwoven fabric (1) (1-1) (named Sample 3) manufactured by the multilayer nonwoven fabric manufacturing apparatus 10 as described above, and the existing polyester artificial cotton (Sample 1) The three structural non-woven fabrics (called sample 2) prepared by using the term “Iraching” and a general yarn were measured to measure the heat retention, the surface smoothness, the flexibility, and the durability. The results shown in Table 1 were obtained.

Table 1

Sample 1: single layer general polyester artificial cotton (nonwoven fabric)

Sample 2: 3 layered polyester composite fiber and cotton (nonwoven fabric)

Sample 3: Multi-layered nonwoven fabric produced using wool according to the present invention

◎: Excellent ○: Good ■: Normal △: Poor

As can be seen from Table 1, the nonwoven fabric (sample 1) made only of general polyester has very low heat retention, poor surface smoothness, moderate flexibility, and only slightly durability, and a three-layer polyester composite. Nonwoven fabric (Sample 2) made of fibers and ordinary yarn was confirmed that the thermal insulation is slightly better than Sample 1, the surface smoothness and durability is good, but the flexibility was normal.

On the other hand, the multi-layered nonwoven fabric (sample 3) prepared using the wool according to the present invention was the most excellent thermal insulation of the test sample, it was confirmed that the surface smoothness, flexibility and durability is also the most excellent.

As described above, the nonwoven fabric of the multi-layered structure in which the intermediate layer of the present invention is made of wool fibers forms a middle wool fiber by using wool (wool), and keeps warmth and cotton by bonding the outer fiber of ordinary polyester on both sides thereof. The nonwoven fabric with excellent smoothness, flexibility and durability can be provided, and its manufacturing method and manufacturing apparatus are not complicated, and are manufactured by using a combination of existing methods and apparatuses, so that they are easily manufactured without expensive equipment costs. You can do it.

Claims (7)

In the non-woven fabric manufactured using wool (WOOL) which is a conventional polyester or natural fiber, It is made by integrally bonding and molding the first jacket fiber (2) and the second jacket fiber (2) of ordinary polyester to the upper and lower surfaces of only the wool or the middle wool fiber (4) containing wool. Multilayered nonwoven fabric characterized in that the interlayer is made of wool fibers. The multi-layered nonwoven fabric of claim 1, wherein the middle wool fiber (4) has a mixing ratio of wool and polyester of 20 to 80:80 to 20%. In manufacturing a laminated nonwoven fabric using wool (WOOL) which is a conventional polyester or natural fiber, The first jacket fiber (2) is made of chemical fiber (FIBER) is supplied by the first jacket fiber supply unit (11) by providing a plurality of card feeders (carding) and a molding machine in a pair. And, the upper surface of the first jacketed fiber (2) to be supplied by the intermediate fiber supply unit 12 by feeding the intermediate wool fiber 4, the upper surface of the intermediate wool fiber (4) is supplied with a second jacketed fiber Supplying and laminating the second envelope fiber 3 by the device unit 13, and performing the normal needle punching of the laminated nonwoven fabric by the needle punching device unit 14, A step in which the heating rollers 15-1 and 15-2 pass through the heating pressing device unit 15 installed up and down to be compressed and fused by a predetermined pressure and heat; Resin spray that is dried by hot air while covering water-soluble acrylic resin for strength reinforcement by the first spray 18 and the second spray 19 on the upper and lower surfaces of the thinner nonwoven fabric and conveyed upward by a conveyor installed in multiple stages. Method for producing a multilayer nonwoven fabric, characterized in that the drying step is included. The method according to claim 3, wherein the heating pressing device unit (15) maintains the temperature of the heating roller (15-1) (15-2) to 140 ~ 180 ℃. 4. The method of claim 3, wherein the water-soluble acrylic resin sprayed from the first spray (18) and the second spray (19) is coated with 3 to 30 g per M ² . In the apparatus for manufacturing a laminated nonwoven fabric while transferring a wool (WOOL) of ordinary polyester or natural fiber by a conventional conveyor, On the upper side of the supply conveyor 11, which is a normal conveyor, a plurality of carding machines and a fiber supply device in which a molding machine is provided are provided in multiple sets, and the first jacket fiber 2 made of chemical fibers (FIBER) is installed. The first outer fiber supply unit 11 for supplying, and the intermediate wool fiber (4) on the upper surface of the first outer fiber 2 to be supplied by supplying the intermediate fiber supply unit 12 and the middle wool fiber The second jacketing fiber supply unit 13 for supplying and stacking the second jacketing fiber 3 on the upper surface of (4), and the needle punching device unit 14 for performing normal needle punching on the laminated nonwoven fabric are sequentially. Installed with, A heating pressing device unit 15 for vertically installing heating rollers 15-1 and 15-2 to compress and fuse the laminated nonwoven fabric by a predetermined pressure and heat; The hot and cold air ducts are coated on the upper and lower surfaces of the thinner nonwoven fabric by the first spray 18 and the second spray 19 and are transported upward by a conveyor installed in multiple stages. An apparatus for producing a multilayer nonwoven fabric, characterized in that it comprises a resin spray drying apparatus portion (16) which is dried by means of a resin. The resin spray drying apparatus unit 16 according to claim 6, In the housing 16-1, the second conveyor 22, the fourth conveyor 24, and the fifth conveyor 25 are installed in the lower, middle, and upper sides of the housing 16-1 in multiple layers, but the second conveyor 22 and the fourth conveyor are installed. On each input side of (24), a short first conveyor 21 and a third conveyor 23 are respectively provided; On the upper side of the first conveyor 21 and on the upper side of the third conveyor 23, on the surfaces of the second jacket fibers 3 (upper jacket) and the first jacket fibers 2 of the multi-layered nonwoven fabric 1, 1-1. The first spray device 18 and the second spray device 19 for spraying and applying acrylic resin, respectively, The first hot air duct 20-1 and the second hot air to dry the sprayed water-soluble acrylic resin on the upper and lower sides of the second conveyor 22 and the fourth conveyor 24 and the lower side of the fifth conveyor 25. The duct 20-2 and the third hot air duct 20-3 and the fourth hot air duct 20-4 and the fifth hot air duct 20-5 are respectively provided. Manufacturing equipment.